| Diamond Bar to Devnya | 6,671.94 mi (10,737.45 km) |
| Diamond Bar to Dimitrovgrad | 6,693.81 mi (10,772.65 km) |
| Diamond Bar to Dobrich | 6,656.95 mi (10,713.33 km) |
| Diamond Bar to Dospat | 6,680.33 mi (10,750.95 km) |
| Diamond Bar to Dupnitsa | 6,616.04 mi (10,647.48 km) |
| Diamond Bar to Elhovo | 6,711.18 mi (10,800.60 km) |
| Diamond Bar to Etropole | 6,605.83 mi (10,631.06 km) |
| Diamond Bar to Gabrovo | 6,638.12 mi (10,683.02 km) |
| Diamond Bar to Gorna Oryahovitsa | 6,631.37 mi (10,672.16 km) |
| Diamond Bar to Gotse Delchev | 6,673.69 mi (10,740.27 km) |
| Diamond Bar to Harmanli | 6,708.45 mi (10,796.21 km) |
| Diamond Bar to Haskovo | 6,699.95 mi (10,782.53 km) |
| Diamond Bar to Ihtiman | 6,624.45 mi (10,661.02 km) |
| Diamond Bar to Isperih | 6,624.02 mi (10,660.32 km) |
| Diamond Bar to Kardzhali | 6,711.76 mi (10,801.54 km) |
